package com.leyou.upload.service;

import com.github.tobato.fastdfs.domain.StorePath;
import com.github.tobato.fastdfs.service.FastFileStorageClient;
import org.apache.commons.lang.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import java.util.List;

@Service
public class UploadService {

    //gif jpg png合法
    private static  final List<String> CONTENT_TYPES= Arrays.asList("image/gif","image/jpeg","image/jpg","image/png");

    private static  final Logger LOGGER= LoggerFactory.getLogger(UploadService.class);

    @Autowired
    private FastFileStorageClient  storageClient;

    public String uploadImage(MultipartFile file) {
        String originalFilename = file.getOriginalFilename();

        //校验文件类型
        String contentType = file.getContentType();
        if (!CONTENT_TYPES.contains(contentType)){
            LOGGER.info("文件类型不合法：{}"+originalFilename );
            return null;
        }

        try {
            //校验文件内容
            BufferedImage bufferedImage = ImageIO.read(file.getInputStream());
            if (bufferedImage == null ){
                LOGGER.info("文件内容不合法：{}"+originalFilename );
                return null;
            }

            // 保存到文件服务器
            //file.transferTo(new File("G:\\IdeaProjects\\projects\\image\\"+originalFilename));
            String ext = StringUtils.substringAfterLast(originalFilename, ".");
            StorePath storePath = this.storageClient.uploadFile(file.getInputStream(), file.getSize(), ext, null);

            //返回url，进行回显
            //return "http://image.leyou.com/"+originalFilename;
            return "http://image.leyou.com/"+storePath.getFullPath();

        } catch (IOException e) {
            LOGGER.info("服务器内部错误："+originalFilename);
            e.printStackTrace();
        }

        return null;
    }
}


















